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The Evolution of Compact Binary Star Systems

机译:紧凑型双星系统的演变

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摘要

We review the formation and evolution of compact binary stars consisting of white dwarfs (WDs), neutron stars (NSs), and black holes (BHs). Binary NSs and BHs are thought to be the primary astrophysical sources of gravitational waves (GWs) within the frequency band of ground-based detectors, while compact binaries of WDs are important sources of GWs at lower frequencies to be covered by space interferometers (LISA). Major uncertainties in the current understanding of properties of NSs and BHs most relevant to the GW studies are discussed, including the treatment of the natal kicks which compact stellar remnants acquire during the core collapse of massive stars and the common envelope phase of binary evolution. We discuss the coalescence rates of binary NSs and BHs and prospects for their detections, the formation and evolution of binary WDs and their observational manifestations. Special attention is given to AM CVn-stars — compact binaries in which the Roche lobe is filled by another WD or a low-mass partially degenerate helium-star, as these stars are thought to be the best LISA verification binary GW sources.
机译:我们回顾了由白矮星(WDs),中子星(NSs)和黑洞(BHs)组成的紧凑型双星的形成和演化。二进制NS和BH被认为是地面探测器频段内重力波(GW)的主要天体物理源,而WD的紧凑二进制是较低频率下GW的重要来源,将被空间干涉仪(LISA)覆盖。 。讨论了目前对与GW研究最相关的NSs和BHs性质的主要不确定性,包括对紧实恒星残留物在大质量恒星核心坍缩和双星演化的共同包络期获得的出生球的处理。我们讨论了二元NSs和BHs的合并率及其检测前景,二元WDs的形成和演化以及它们的观测表现。 AM CVn星特别受关注,它们是紧凑的双星,其中罗氏瓣由另一个WD或低质量的部分简并氦星填充,因为这些星被认为是最好的LISA验证双星GW来源。

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